Adds ability for pre-target accelerators to not consume events

services/ui/public/cpp/window_tree_client.h

Index: services/ui/public/cpp/window_tree_client.h
diff --git a/services/ui/public/cpp/window_tree_client.h b/services/ui/public/cpp/window_tree_client.h
index 07b6635c5f0a2d65b7d0b31ad193d341250120a3..898178c5ffd80fc32a818551577a4aaaa544b66d 100644
--- a/services/ui/public/cpp/window_tree_client.h
+++ b/services/ui/public/cpp/window_tree_client.h
@@ -341,7 +341,9 @@ class WindowTreeClient : public mojom::WindowTreeClient,
                          mojom::MoveLoopSource source,
                          const gfx::Point& cursor_location) override;
   void WmCancelMoveLoop(uint32_t window_id) override;
-  void OnAccelerator(uint32_t id, std::unique_ptr<ui::Event> event) override;
+  void OnAccelerator(uint32_t ack_id,
+                     uint32_t accelerator_id,
+                     std::unique_ptr<ui::Event> event) override;
 
   // Overridden from WindowManagerClient:
   void SetFrameDecorationValues(